27380728267 has 2 divisors, whose sum is σ = 27380728268. Its totient is φ = 27380728266.

The previous prime is 27380728261. The next prime is 27380728321. The reversal of 27380728267 is 76282708372.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27380728267 is a prime.

It is not a weakly prime, because it can be changed into another prime (27380728261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13690364133 + 13690364134.

It is an arithmetic number, because the mean of its divisors is an integer number (13690364134).

Almost surely, 2^27380728267 is an apocalyptic number.

27380728267 is a deficient number, since it is larger than the sum of its proper divisors (1).

27380728267 is an equidigital number, since it uses as much as digits as its factorization.

27380728267 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3161088, while the sum is 52.

The spelling of 27380728267 in words is "twenty-seven billion, three hundred eighty million, seven hundred twenty-eight thousand, two hundred sixty-seven".